Refrigeration cycle device and refrigerant leakage determination system
AssigneeDaikin Industries, Ltd.
InventorsShu Miura, Keisuke Nishitani
Life of this patent
Estimating the term…
Abstract
An air conditioner has a heat source unit and a utilization unit, and includes a refrigerant circuit, a first detector, and a controller. The refrigerant circuit is configured by a compressor, a condenser, an expansion mechanism, and an evaporator being connected by a refrigerant pipe. The first detector detects the temperature or pressure of refrigerant in the refrigerant circuit. The controller starts the compressor during the non-operation of the compressor and executes a determination mode to determine the presence or absence of refrigerant leakage from the refrigerant circuit on the basis of a detection value of the first detector.
Claims15
A refrigeration cycle device having a heat source unit and a utilization unit, the refrigeration cycle device comprising:
- a refrigerant circuit that is configured by a compressor, a condenser, an expansion mechanism, and an evaporator being connected by a refrigerant pipe;
- a first detector that detects a temperature or a pressure of refrigerant in the refrigerant circuit;
- and
- a controller that starts the compressor during non-operation of the compressor and executes a determination mode to determine presence or absence of refrigerant leakage from the refrigerant circuit on the basis of a detection value of the first detector, wherein
- the utilization unit has a utilization fan,
- the utilization fan can be set to operate in a rotational speed range between a first rotational speed and a second rotational speed, and
- when executing the determination mode as initiated from a state of non-operation of the compressor, the controller causes the utilization fan to operate during the determination mode at or below an intermediate rotational speed between the first rotational speed and the second rotational speed.
Dependencies are inferred from the claim text.